Add 28/70 and 1/40
28/70 + 1/40 is 17/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
28/70 = 28 × 4/70 × 4 = 112/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Add the two like fractions:
112/280 + 7/280 = 112 + 7/280 = 119/280 - 119/280 simplified gives 17/40
- So, 28/70 + 1/40 = 17/40
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